12120198 has 16 divisors (see below), whose sum is σ = 24513840. Its totient is φ = 3994496.

The previous prime is 12120181. The next prime is 12120223. The reversal of 12120198 is 89102121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10815 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (1532115).

Almost surely, 2^12120198 is an apocalyptic number.

12120198 is an abundant number, since it is smaller than the sum of its proper divisors (12393642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12120198 is a wasteful number, since it uses less digits than its factorization.

12120198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22791.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 12120198 is about 3481.4074739967. The cubic root of 12120198 is about 229.7047124220.

The spelling of 12120198 in words is "twelve million, one hundred twenty thousand, one hundred ninety-eight".